Parallel Computing with GPUs - Memory Dr. Robert Chisholm Lecture
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Questions and Answers

What happens when a shallow copy is made in C for pointer data?

  • New memory is allocated for each variable
  • Both variables point to the same memory location (correct)
  • The original variable is deallocated
  • The original variable points to the copy variable's memory location

    • In the context of the provided code, what will be the output of the program?

  • Forename=John, Surname=John
  • Forename=Paul, Surname=Richmond
  • Forename=John, Surname=Richmond (correct)
  • Forename=Paul, Surname=John

    • What is the main drawback of shallow copying pointer data in C?

  • It reduces memory consumption
  • It leads to faster program execution
  • It simplifies debugging
  • Memory leaks can occur (correct)

    • How can deep copying be achieved for pointer data in C?

    <p>Manually allocate memory for each variable</p> Signup and view all the answers

    In the given code snippet, what is the outcome of the 'imposter = paul;' statement?

    <p>A shallow copy is performed</p> Signup and view all the answers

    What is the main purpose of a pointer in programming?

    <p>To hold the address of a variable</p> Signup and view all the answers

    Which operator can be used to define a pointer variable in C programming?

    <ul> <li></li> </ul> Signup and view all the answers

    What does the & operator do in C when applied to a variable?

    <p>Obtains the memory address of the variable</p> Signup and view all the answers

    Which of the following statements about pointers and arrays is true?

    <p>Pointers and arrays are closely related</p> Signup and view all the answers

    In C, what is the size of a pointer?

    <p>Equal to the size of the data type it points to</p> Signup and view all the answers

    What does the * operator represent when used with pointers in C?

    <ul> <li>indicates dereferencing a pointer</li> </ul> Signup and view all the answers

    What is the endianness format used by x86 and x64 architectures?

    <p>Little endian</p> Signup and view all the answers

    In the code snippet provided, what is the hexadecimal representation of the integer stored at memory address p+2?

    <p>0xDE</p> Signup and view all the answers

    What is the content of memory address 0x0040000 in the little endian format given?

    <p>0x56</p> Signup and view all the answers

    What does int **c represent in the context provided?

    <p>A two-dimensional array</p> Signup and view all the answers

    What type of array must b be initialized as per the context provided?

    <p>Single-dimensional array of pointers</p> Signup and view all the answers

    Which architecture may have big endian format as noted in the text?

    <p>Embedded hardware</p> Signup and view all the answers

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